CN107619958B - Iron removing method for regenerated Al-Mg-Si series aluminum alloy - Google Patents
Iron removing method for regenerated Al-Mg-Si series aluminum alloy Download PDFInfo
- Publication number
- CN107619958B CN107619958B CN201710874459.8A CN201710874459A CN107619958B CN 107619958 B CN107619958 B CN 107619958B CN 201710874459 A CN201710874459 A CN 201710874459A CN 107619958 B CN107619958 B CN 107619958B
- Authority
- CN
- China
- Prior art keywords
- iron
- temperature
- aluminium
- aluminum
- refining agent
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Active
Links
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical compound [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 title claims abstract description 175
- 229910052742 iron Inorganic materials 0.000 title claims abstract description 78
- 229910000838 Al alloy Inorganic materials 0.000 title claims abstract description 34
- 238000000034 method Methods 0.000 title claims abstract description 25
- 229910018464 Al—Mg—Si Inorganic materials 0.000 title abstract description 3
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 claims abstract description 86
- 229910052782 aluminium Inorganic materials 0.000 claims abstract description 86
- 229910045601 alloy Inorganic materials 0.000 claims abstract description 43
- 239000000956 alloy Substances 0.000 claims abstract description 43
- 239000007788 liquid Substances 0.000 claims abstract description 16
- 229910052748 manganese Inorganic materials 0.000 claims abstract description 14
- 229910020261 KBF4 Inorganic materials 0.000 claims abstract description 9
- 239000000919 ceramic Substances 0.000 claims abstract description 4
- 239000006260 foam Substances 0.000 claims abstract description 4
- 238000007670 refining Methods 0.000 claims description 52
- 239000003795 chemical substances by application Substances 0.000 claims description 49
- 239000003153 chemical reaction reagent Substances 0.000 claims description 28
- FWGZLZNGAVBRPW-UHFFFAOYSA-N alumane;strontium Chemical compound [AlH3].[Sr] FWGZLZNGAVBRPW-UHFFFAOYSA-N 0.000 claims description 22
- FAPWRFPIFSIZLT-UHFFFAOYSA-M Sodium chloride Chemical compound [Na+].[Cl-] FAPWRFPIFSIZLT-UHFFFAOYSA-M 0.000 claims description 20
- 239000004411 aluminium Substances 0.000 claims description 19
- 239000011572 manganese Substances 0.000 claims description 17
- -1 aluminium-manganese Chemical compound 0.000 claims description 12
- 229910052721 tungsten Inorganic materials 0.000 claims description 12
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 claims description 10
- 239000011780 sodium chloride Substances 0.000 claims description 10
- VHHHONWQHHHLTI-UHFFFAOYSA-N hexachloroethane Chemical compound ClC(Cl)(Cl)C(Cl)(Cl)Cl VHHHONWQHHHLTI-UHFFFAOYSA-N 0.000 claims description 9
- 238000001556 precipitation Methods 0.000 claims description 9
- PWHULOQIROXLJO-UHFFFAOYSA-N Manganese Chemical compound [Mn] PWHULOQIROXLJO-UHFFFAOYSA-N 0.000 claims description 8
- 230000008929 regeneration Effects 0.000 claims description 8
- 238000011069 regeneration method Methods 0.000 claims description 8
- 229910052712 strontium Inorganic materials 0.000 claims description 7
- CIOAGBVUUVVLOB-UHFFFAOYSA-N strontium atom Chemical compound [Sr] CIOAGBVUUVVLOB-UHFFFAOYSA-N 0.000 claims description 7
- VWDWKYIASSYTQR-UHFFFAOYSA-N sodium nitrate Chemical compound [Na+].[O-][N+]([O-])=O VWDWKYIASSYTQR-UHFFFAOYSA-N 0.000 claims description 6
- 239000000203 mixture Substances 0.000 claims description 2
- 239000012535 impurity Substances 0.000 abstract description 9
- 230000009471 action Effects 0.000 abstract description 7
- XUIMIQQOPSSXEZ-UHFFFAOYSA-N Silicon Chemical compound [Si] XUIMIQQOPSSXEZ-UHFFFAOYSA-N 0.000 abstract description 6
- 239000010703 silicon Substances 0.000 abstract description 6
- 229910052710 silicon Inorganic materials 0.000 abstract description 6
- 229910000859 α-Fe Inorganic materials 0.000 abstract description 5
- JZQOJFLIJNRDHK-CMDGGOBGSA-N alpha-irone Chemical compound CC1CC=C(C)C(\C=C\C(C)=O)C1(C)C JZQOJFLIJNRDHK-CMDGGOBGSA-N 0.000 abstract description 4
- 230000005484 gravity Effects 0.000 abstract description 4
- 150000001875 compounds Chemical class 0.000 abstract description 3
- 230000008569 process Effects 0.000 abstract description 3
- 230000008859 change Effects 0.000 abstract description 2
- 238000006243 chemical reaction Methods 0.000 abstract description 2
- YNDGDLJDSBUSEI-UHFFFAOYSA-N aluminum strontium Chemical compound [Al].[Sr] YNDGDLJDSBUSEI-UHFFFAOYSA-N 0.000 abstract 1
- 238000000354 decomposition reaction Methods 0.000 abstract 1
- 238000010438 heat treatment Methods 0.000 abstract 1
- 238000002844 melting Methods 0.000 abstract 1
- 230000008018 melting Effects 0.000 abstract 1
- 239000003607 modifier Substances 0.000 abstract 1
- 239000002244 precipitate Substances 0.000 abstract 1
- 238000002474 experimental method Methods 0.000 description 10
- 238000005303 weighing Methods 0.000 description 10
- 239000011777 magnesium Substances 0.000 description 9
- 230000007797 corrosion Effects 0.000 description 7
- 238000005260 corrosion Methods 0.000 description 7
- 238000004519 manufacturing process Methods 0.000 description 6
- FYYHWMGAXLPEAU-UHFFFAOYSA-N Magnesium Chemical compound [Mg] FYYHWMGAXLPEAU-UHFFFAOYSA-N 0.000 description 5
- 238000005266 casting Methods 0.000 description 5
- 230000000052 comparative effect Effects 0.000 description 5
- 238000010586 diagram Methods 0.000 description 5
- 229910052749 magnesium Inorganic materials 0.000 description 5
- 238000005088 metallography Methods 0.000 description 5
- 238000012360 testing method Methods 0.000 description 5
- 238000001914 filtration Methods 0.000 description 4
- 238000000926 separation method Methods 0.000 description 4
- PNEYBMLMFCGWSK-UHFFFAOYSA-N Alumina Chemical compound [O-2].[O-2].[O-2].[Al+3].[Al+3] PNEYBMLMFCGWSK-UHFFFAOYSA-N 0.000 description 3
- 238000011160 research Methods 0.000 description 3
- 229910001570 bauxite Inorganic materials 0.000 description 2
- 238000011161 development Methods 0.000 description 2
- 230000018109 developmental process Effects 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 238000009776 industrial production Methods 0.000 description 2
- 230000001788 irregular Effects 0.000 description 2
- 239000011159 matrix material Substances 0.000 description 2
- 229910052751 metal Inorganic materials 0.000 description 2
- 239000002184 metal Substances 0.000 description 2
- 238000004321 preservation Methods 0.000 description 2
- 238000012545 processing Methods 0.000 description 2
- 239000000126 substance Substances 0.000 description 2
- 239000010936 titanium Substances 0.000 description 2
- 229910052719 titanium Inorganic materials 0.000 description 2
- 239000002699 waste material Substances 0.000 description 2
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 description 1
- 229910019752 Mg2Si Inorganic materials 0.000 description 1
- 208000037656 Respiratory Sounds Diseases 0.000 description 1
- 229910000831 Steel Inorganic materials 0.000 description 1
- RTAQQCXQSZGOHL-UHFFFAOYSA-N Titanium Chemical compound [Ti] RTAQQCXQSZGOHL-UHFFFAOYSA-N 0.000 description 1
- HCHKCACWOHOZIP-UHFFFAOYSA-N Zinc Chemical compound [Zn] HCHKCACWOHOZIP-UHFFFAOYSA-N 0.000 description 1
- 238000004458 analytical method Methods 0.000 description 1
- 238000002048 anodisation reaction Methods 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000000903 blocking effect Effects 0.000 description 1
- 229910052799 carbon Inorganic materials 0.000 description 1
- 229910052729 chemical element Inorganic materials 0.000 description 1
- 239000012141 concentrate Substances 0.000 description 1
- 229910052802 copper Inorganic materials 0.000 description 1
- 239000010949 copper Substances 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 230000007812 deficiency Effects 0.000 description 1
- 238000007872 degassing Methods 0.000 description 1
- 238000001514 detection method Methods 0.000 description 1
- UAMZXLIURMNTHD-UHFFFAOYSA-N dialuminum;magnesium;oxygen(2-) Chemical compound [O-2].[O-2].[O-2].[O-2].[Mg+2].[Al+3].[Al+3] UAMZXLIURMNTHD-UHFFFAOYSA-N 0.000 description 1
- 238000004512 die casting Methods 0.000 description 1
- 238000004090 dissolution Methods 0.000 description 1
- 239000000428 dust Substances 0.000 description 1
- 238000007667 floating Methods 0.000 description 1
- 238000005242 forging Methods 0.000 description 1
- PCHJSUWPFVWCPO-UHFFFAOYSA-N gold Chemical compound [Au] PCHJSUWPFVWCPO-UHFFFAOYSA-N 0.000 description 1
- 229910052737 gold Inorganic materials 0.000 description 1
- 239000010931 gold Substances 0.000 description 1
- 238000003754 machining Methods 0.000 description 1
- WPBNNNQJVZRUHP-UHFFFAOYSA-L manganese(2+);methyl n-[[2-(methoxycarbonylcarbamothioylamino)phenyl]carbamothioyl]carbamate;n-[2-(sulfidocarbothioylamino)ethyl]carbamodithioate Chemical compound [Mn+2].[S-]C(=S)NCCNC([S-])=S.COC(=O)NC(=S)NC1=CC=CC=C1NC(=S)NC(=O)OC WPBNNNQJVZRUHP-UHFFFAOYSA-L 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 230000003647 oxidation Effects 0.000 description 1
- 238000007254 oxidation reaction Methods 0.000 description 1
- 230000000505 pernicious effect Effects 0.000 description 1
- 238000000053 physical method Methods 0.000 description 1
- 229920001296 polysiloxane Polymers 0.000 description 1
- 230000001376 precipitating effect Effects 0.000 description 1
- 238000011084 recovery Methods 0.000 description 1
- 238000004064 recycling Methods 0.000 description 1
- 230000001172 regenerating effect Effects 0.000 description 1
- 239000013535 sea water Substances 0.000 description 1
- 239000007787 solid Substances 0.000 description 1
- 238000007711 solidification Methods 0.000 description 1
- 230000008023 solidification Effects 0.000 description 1
- 239000010959 steel Substances 0.000 description 1
- 238000005979 thermal decomposition reaction Methods 0.000 description 1
- 230000007704 transition Effects 0.000 description 1
- 238000009834 vaporization Methods 0.000 description 1
- 229910052725 zinc Inorganic materials 0.000 description 1
- 239000011701 zinc Substances 0.000 description 1
Landscapes
- Manufacture And Refinement Of Metals (AREA)
Abstract
The invention discloses a method for removing iron from regenerated Al-Mg-Si aluminum alloy, wherein in the iron removing process, the added Mn element can react with needle-shaped β -AlFeSi iron-rich phase to produce α -Al15(Fe,Mn)3Si2The massive iron phase of (2) sinks to the bottom of the crucible under the action of gravity, and Mg can promote the change of the shape of the acicular iron-rich phase. KBF4Decomposition by heating to give B3+Fe of high melting point and high density formed by reaction with iron impurity2The compound B has high density difference with the molten liquid, and the iron-rich phases sink to the bottom of the crucible under the action of gravity, so as to remove impurity iron elements in the aluminum alloy, filter out the precipitate at the lower part of the aluminum liquid through a ceramic foam filter screen, add an aluminum-strontium intermediate alloy modifier, convert the remaining trace β -iron phase into a α -iron phase with small harmfulness, and refine the silicon phase at the same time, so that the structure is more uniform.
Description
Technical field
The invention belongs to aluminium-alloy iron-removing technical fields, remove iron side more particularly, to a kind of regeneration Al-Mg-Si-type aluminum alloy
Method.
Background technique
It is compared with copper, iron, steel, aluminium is a kind of very young metal.But since the density of aluminium and aluminium alloy is small, plasticity
Well, intensity is high and has very strong corrosion resistance and good conductivity, and it is each to have been widely used for food, automobile, building, machinery etc.
Industry.
China is currently that the first big country of primary aluminum yield, production aluminum amount account for 40% or more world aluminum yield in the world.With primary aluminum
Yield is more and more, and the bauxite resource being enriched in society is also more and more, in addition, the exhaustion of bauxite resource and energy cost are not
Disconnected to improve, aluminum production cost is also gradually got higher.Therefore, to the processing and recycling of the aluminum products scrapped, become the following Aluminum
One important directions of development.Compared with producing primary aluminum, the secondary aluminium of production phase homogenous quantities saves 90% energy, reduces 40%
Waste discharge and reduce by 60% production cost.
But having a serious problem during waste aluminum recovery, there is a large amount of impurity element, impurity in aluminium scrap
Element and inclusion content are high, greatly limit the development and application of secondary aluminium alloy.It is especially miscellaneous with iron in all impurity elements
Matter requirement is most stringent, and iron tramp seriously affects its comprehensive mechanical property and corrosion resistance in high-quality aluminum alloy, so, it
Develop high-performance aluminium alloy, it is necessary to solve and eliminate the influence of ferro element.
It is maximum with the harm of ferro element in numerous impurity elements.Fe solid solubility in aluminium alloy is very low, when Fe content is super
When 0.4%, it is easy to form coarse gill shape Fe phase with other elements in aluminium alloy, form close to FeSiAl5(i.e. β-Fe
Phase) compound.It has seriously isolated matrix, generates stress and concentrates and sprout crackle, in process of deformation, matrix and brittleness
It is precipitated on intersection interface and is easy to produce hole.When Fe content is more than 0.7%, coarse β-Fe mutually will largely exist.Fe is divided by
Except influencing on material property, also the flowing of molten metal can be hindered during solidification, to increase the shrinkage cavity of ingot casting and loose
The defects of.Needle-shaped Fe phase hardness is higher, and cutter is worn in machining process, cannot be guaranteed element precision.
In order to reduce the harm of needle-shaped Fe phase, research method mainly includes two classes at present: the first kind is to use Metamorphism treatment,
Addition or changes Fe phase morphology using special technique at chemical element, make coarse acicular beta-Fe phase transition harmfulness compared with
Small α-Fe phase；Another kind is to utilize physicochemical properties different between Fe-riched phase and melt, Jin Erda using physical method
To the purpose for removing iron, including the separation of settling methods, centrifugal separation, electromagnetism, electroslag refining and filtering etc..Centrifuge separation increases
Production process, trivial operations are unsuitable for industrial production.Electromagnetism separation is more demanding to the pattern of Fe phase, when electromagnetic force is permeated
When depth deficiency, it will lead to irregular Fe phase and move irregular, be easy to produce turbulent flow, remove iron rate to reduce.Electroslag refining
Research is also relatively fewer at present, and rests in the research of fine aluminium, exists simultaneously to elements such as silicon, magnesium and does not study specifically.
Al-Mg-Si-type aluminum alloy is a kind of using aluminium, magnesium, silicon as the forging of principal component and casting alloy.General magnesium content is
5% or so, silicon content is 0.8%~1.3%.A small amount of zinc, manganese, titanium is added to improve intensity simultaneously.Silicon and magnesium elements generate
Mg2Si, the corrosion resistance of alloy is especially good to the corrosion resistance of seawater, is easy to carry out anodic oxidation and obtain beautiful film.?
In high purity alumina-magnesia alloy, it is the alloy of elongation maximum, machinability, and corrosion-resistant, toughness, anodization performance are good, casting
Performance is poor, for stringing, accessory ship part, handle, engraving blank, office furniture and aircraft electric mounting articles etc..
By taking ZL302 aluminium alloy as an example, chemical component are as follows: content of magnesium about 5%, silicone content about 0.8~1.3%, manganese content is low
In 0.6%, Ti content is less than 0.2%, and iron content is lower than 0.3%, and surplus is aluminium.
Summary of the invention
The purpose of the present invention is designing a kind of method for removing iron for regenerating Al-Mg-Si-type aluminum alloy, overcome at present except iron side
The single problem of method, and to the difference of element contained by the aluminium scrap of the different trades mark, it is targetedly cleaned, and overcome except iron
The problem of process is difficult to control reaction and is not suitable for industrial production etc..
The present invention is technical solution used by solving its technical problem are as follows:
A kind of regeneration Al-Mg-Si-type aluminum alloy method for removing iron, includes the following steps:
(1-1) weighs the aluminium block that quality is W, weighs the refining agent of 0.25%W~0.35%W, refining agent is cast into essence
Agent block is refined, refining agent block is put into baking oven, oven temperature is made to rise to 200 DEG C~350 DEG C and keeps the temperature 1~2 hour；
(1-2) weighs the iron removing reagent of 1.5%W~2.5%W, and iron removing reagent is put into baking oven, and oven temperature is made to rise to 250
DEG C~300 DEG C and heat preservation 50~80 minutes；
(1-3) weighs aluminium-strontium intermediate alloy alterant of 0.3%W~0.45%W, and aluminium-strontium intermediate alloy alterant is put
Into baking oven, so that oven temperature is risen to 250 DEG C~350 DEG C and keep the temperature 30~60 minutes；
Molten aluminum is heated to 700 DEG C~720 DEG C by (1-4), and refining agent is pressed into molten aluminum with bell jar and keeps the temperature 20~30 points
It skims after clock；
(1-5) makes temperature of aluminum liquid be in 710 DEG C~740 DEG C, and iron removing reagent is added into molten aluminum and keeps the temperature 40~60 minutes；
(1-6) filters off molten aluminum bottom precipitation, and temperature of aluminum liquid is made to be in 700 DEG C~720 DEG C, and alterant is added simultaneously into molten aluminum
Heat preservation 20~40 minutes, it is last air-cooled.
Operation of the present invention is simple, low in cost, easily controllable, can in conjunction with refining agent, iron removing reagent, filtering and alterant
By the Needle like Iron Phase capture in secondary aluminium alloy, it is deposited to crucible bottom, is substantially reduced iron content in aluminium scrap, while being become
Matter processing, makes remaining micro β-iron phase be converted into the small α-iron phase of harmfulness.Improve the tensile strength and extension of aluminium alloy
Rate enhances the corrosion resistance and casting character of aluminium alloy.
Xray fluorescence spectrometer can be used and carry out chemical component detection and analysis.
Method of the invention is practical, simple to operation, and the pernicious gas of generation is few, can effectively remove the conjunction of Al-Mg-Si system aluminium
Impurity ferro element in gold.NaNO in refining agent of the invention3It is reacted with carbon dust and generates N2With CO2, and do not dissolve in molten aluminum, bubble
Take the oxide inclusion and H in molten aluminum out of during floating2, play the role of degasification slagging-off.C2Cl6It decomposes and generates C2Cl4With
Cl2, C2Cl4Vaporization at high temperature plays the purpose of auxiliary refining.Na2AlF6Dissolution aluminium oxide can be adsorbed, decomposes the NaF of generation simultaneously
With metamorphism.NaCl is worked as a buffer, and prevents from reacting too fast.
In Al-Mg-Si-type aluminum alloy, the Mn element of addition can react production α-with acicular beta-AlFeSi Fe-riched phase
Al15(Fe,Mn)3Si2Blocky iron phase, be deposited to crucible bottom under the effect of gravity, Mg can promote the shape of needle-shaped Fe-riched phase
The change of state.KBF4B is generated by thermal decomposition3+, the highdensity Fe of high-melting-point generated is reacted with impurity iron2B compound and melt
There is high density contrast, these Fe-riched phases are deposited to crucible bottom under the effect of gravity, to remove iron impurity from aluminium alloy element.
Molten aluminum lower part precipitating is filtered off by ceramic foam filter net, aluminium-strontium intermediate alloy alterant is added, makes remaining micro-
Amount β-iron phase is converted into the small α-iron phase of harmfulness, while refining silicon phase, keeps tissue more uniform.
Preferably, the refining agent is by NaNO3、C2Cl6、Na2AlF6, NaCl and graphite powder composition, in refining agent
NaNO3、C2Cl6、Na2AlF6, NaCl and graphite powder mass parts ratio be (10.3-12): (1-1.7): (9.7-11.3):
(6.7-8.4): (1.7-2.3).
Preferably, the iron removing reagent is by aluminium-manganese intermediate alloy and KBF4It forms, aluminium-manganese intermediate alloy in iron removing reagent
And KBF4Mass parts ratio be (1-1.57): (1.3-1.86).
Molten aluminum bottom precipitation is removed preferably, filtering off using ceramic foam filter net.
Preferably, the content of manganese is 9%-11% in the aluminium-manganese intermediate alloy.
Preferably, the content of strontium is 8%-11% in the aluminium-strontium intermediate alloy alterant.
Therefore, it the invention has the following beneficial effects: easy to operate, low in cost, easily controllable, in conjunction with refining agent, removes
Needle like Iron Phase in secondary aluminium alloy can be captured, be deposited to crucible bottom, make iron in aluminium scrap by chalybeate, filtering and alterant
Content is substantially reduced, while carrying out Metamorphism treatment, and remaining micro β-iron phase is made to be converted into the small α-iron phase of harmfulness.It improves
The tensile strength and elongation percentage of aluminium alloy enhance the corrosion resistance and casting character of aluminium alloy.
Detailed description of the invention
Fig. 1 is a kind of experiment front and back metallography microscope comparative diagram of the embodiment of the present invention 1；
Fig. 2 is a kind of experiment front and back metallography microscope comparative diagram of the embodiment of the present invention 2；
Fig. 3 is a kind of experiment front and back metallography microscope comparative diagram of the embodiment of the present invention 3；
Fig. 4 is a kind of experiment front and back metallography microscope comparative diagram of the embodiment of the present invention 4；
Fig. 5 is a kind of experiment front and back metallography microscope comparative diagram of the embodiment of the present invention 5；
Fig. 6 is a kind of flow chart of the embodiment of the present invention 1.
Specific embodiment
The present invention will be further described with reference to the accompanying drawings and detailed description.
Embodiment 1:
As shown in fig. 6, a kind of regeneration Al-Mg-Si-type aluminum alloy method for removing iron, includes the following steps:
Step 100, weigh that refining agent, die casting is blocking and toasts
The aluminium block that quality is 2Kg is weighed, the refining agent of 6g is weighed, refining agent is cast into refining agent block, by refining agent block
It is put into baking oven, oven temperature is made to rise to 250 DEG C and keeps the temperature 1.5 hours；NaNO in refining agent3、C2Cl6、Na2AlF6、NaCl
Mass parts ratio with graphite powder is 11:1.5:10.2:7.5:1.9.
Step 200, it weighs iron removing reagent and toasts
The iron removing reagent for weighing 50g, iron removing reagent is put into baking oven, so that oven temperature is risen to 270 DEG C and is kept the temperature 50 minutes；It removes
Aluminium-manganese intermediate alloy and aluminium KBF in chalybeate4Mass parts ratio be 1.36:1.50, manganese in the aluminium-manganese intermediate alloy
Content is 10%.
Step 300, it weighs alterant and toasts
Step 200, it weighs alterant and toasts
Aluminium-strontium intermediate alloy the alterant for weighing 10g, aluminium-strontium intermediate alloy alterant is put into baking oven, baking oven temperature is made
Degree rises to 300 DEG C and keeps the temperature 35 minutes；The content of strontium is 9% in aluminium-strontium intermediate alloy alterant in alterant.
Step 400, refining agent is added in molten aluminum
Molten aluminum is heated to 720 DEG C, refining agent is pressed into molten aluminum and is kept the temperature with bell jar and is skimmed after twenty minutes；
Step 500, iron removing reagent is added in molten aluminum
So that temperature of aluminum liquid is in 720 DEG C, iron removing reagent is added into molten aluminum and keeps the temperature 50 minutes, iron-content is dropped from 0.51%
To 0.27%；As shown in table 1.
Step 600, alterant is added in molten aluminum
Molten aluminum bottom precipitation is filtered off, temperature of aluminum liquid is made to be in 700 DEG C, alterant is added into molten aluminum and keeps the temperature 30 minutes,
Last air-cooled, as shown in Figure 1, left figure is metallographic microscope before testing, it can be observed that a large amount of Needle like Iron Phase, right figure is metallographic after experiment
Figure, it can be seen that under the action of alterant, Needle like Iron Phase pattern is changed, and switchs to the smaller blocky or Chinese character of harmfulness
Shape.
Table 1
| Element | Apparent concentration | Mass percent [wt.%] | Atomic percent [at.%] |
| Al | 79.24 | 95.14 | 95.14 |
| Si | 0.56 | 0.92 | 0.88 |
| Fe | 0.42 | 0.27 | 0.13 |
| Mn | 0.41 | 0.45 | 0.22 |
| Mg | 3.27 | 3.22 | 3.63 |
| Total amount: | 83.9 | 100.00 | 100.00 |
Embodiment 2:
A kind of regeneration Al-Mg-Si-type aluminum alloy method for removing iron, includes the following steps:
Step 1, the aluminium block that quality is 2Kg is weighed, the refining agent of 5g is weighed, refining agent is cast into refining agent block, it will be smart
Refining agent block is put into baking oven, so that oven temperature is risen to 200 DEG C and is kept the temperature 2 hours；NaNO in refining agent3、C2Cl6、Na2AlF6、
The mass parts ratio of NaCl and graphite powder is 10.3:1.2:9.7:8.4:1.6.
Step 2, the iron removing reagent for weighing 3g, iron removing reagent is put into baking oven, so that oven temperature is risen to 250 DEG C and is kept the temperature 80 points
Clock；Aluminium-manganese intermediate alloy and KBF4Mass parts ratio be 1:1.86.The content of manganese is 9% in the aluminium-manganese intermediate alloy.
Step 3, the aluminium-strontium intermediate alloy alterant for weighing 6g, aluminium-strontium intermediate alloy alterant is put into baking oven, is made
Oven temperature rises to 250 DEG C and keeps the temperature 30 minutes；The content of strontium is 8% in alterant aluminium-strontium intermediate alloy.
Step 4, molten aluminum is heated to 700 DEG C, refining agent is pressed into molten aluminum with bell jar and skimmed after keeping the temperature 25 minutes.
Step 5, make temperature of aluminum liquid be in 710 DEG C, into molten aluminum be added iron removing reagent and keep the temperature 40 minutes, iron-content from
0.43% drops to 0.21%.As shown in table 2.
Step 6, molten aluminum bottom precipitation is filtered off, temperature of aluminum liquid is made to be in 720 DEG C, alterant is added into molten aluminum and keeps the temperature 20
Minute, last air-cooled, as shown in Fig. 2, left figure is metallographic microscope before testing, it can be observed that a large amount of Needle like Iron Phase, right figure is experiment
Metallographic microscope afterwards, it can be seen that under the action of alterant, Needle like Iron Phase pattern is changed, and switchs to the smaller bulk of harmfulness
Or Chinese character shape.
Table 2
Embodiment 3:
A kind of regeneration Al-Mg-Si-type aluminum alloy method for removing iron, includes the following steps:
Step 1, the aluminium block that quality is 2Kg is weighed, the refining agent of 7g is weighed, refining agent is cast into refining agent block, it will be smart
Refining agent block is put into baking oven, so that oven temperature is risen to 300 DEG C and is kept the temperature 2 hours；NaNO in refining agent3、C2Cl6、Na2AlF6、
The mass parts ratio of NaCl and graphite powder is 12:1:10:6.7:2.3.
Step 2, the iron removing reagent for weighing 4g, iron removing reagent is put into baking oven, so that oven temperature is risen to 300 DEG C and is kept the temperature 60 points
Clock；Aluminium-manganese intermediate alloy and KBF4Mass parts ratio be 1.2:1.75.The content of manganese is in the aluminium-manganese intermediate alloy
11%.
Step 3, the aluminium-strontium intermediate alloy alterant for weighing 7g, aluminium-strontium intermediate alloy alterant is put into baking oven, is made
Oven temperature rises to 300 DEG C and keeps the temperature 60 minutes；The content of strontium is 9% in alterant aluminium-strontium intermediate alloy.
Step 4, molten aluminum is heated to 720 DEG C, refining agent is pressed into molten aluminum with bell jar and skimmed after keeping the temperature 30 minutes.
Step 5, make temperature of aluminum liquid be in 740 DEG C, into molten aluminum be added iron removing reagent and keep the temperature 45 minutes, iron-content from
0.34% drops to 0.19%.As shown in table 3.
Step 6, molten aluminum bottom precipitation is filtered off, temperature of aluminum liquid is made to be in 710 DEG C, alterant is added into molten aluminum and keeps the temperature 25
Minute, last air-cooled, as shown in figure 3, left figure is metallographic microscope before testing, it can be observed that a large amount of Needle like Iron Phase, right figure is experiment
Metallographic microscope afterwards, it can be seen that under the action of alterant, Needle like Iron Phase pattern is changed, and switchs to the smaller bulk of harmfulness
Or Chinese character shape.
Table 3
| Element | Apparent concentration | Mass percent [wt.%] | Atomic percent [at.%] |
| Al | 76.42 | 94.12 | 94.04 |
| Si | 1.02 | 1.17 | 1.12 |
| Fe | 0.22 | 0.19 | 0.09 |
| Mn | 0.47 | 0.51 | 0.25 |
| Mg | 4.15 | 4.01 | 4.50 |
| Total amount: | 82.28 | 100.00 | 100.00 |
Embodiment 4:
A kind of regeneration Al-Mg-Si-type aluminum alloy method for removing iron, includes the following steps:
Step 1, the aluminium block that quality is 2Kg is weighed, the refining agent of 5g is weighed, refining agent is cast into refining agent block, it will be smart
Refining agent block is put into baking oven, so that oven temperature is risen to 200 DEG C and is kept the temperature 2 hours；NaNO in refining agent3、C2Cl6、Na2AlF6、
The mass parts ratio of NaCl and graphite powder is 11.5:1.6:11:8:1.7.
Step 2, the iron removing reagent for weighing 3.6g, iron removing reagent is put into baking oven, so that oven temperature is risen to 280 DEG C and is kept the temperature 55
Minute；Aluminium-manganese intermediate alloy and KBF4Mass parts ratio be 1,5:1.35.The content of manganese is in the aluminium-manganese intermediate alloy
10%.
Step 3, the aluminium-strontium intermediate alloy alterant for weighing 9g, aluminium-strontium intermediate alloy alterant is put into baking oven, is made
Oven temperature rises to 270 DEG C and keeps the temperature 50 minutes；The content of strontium is 11% in alterant aluminium-strontium intermediate alloy.
Step 4, molten aluminum is heated to 700 DEG C, refining agent is pressed into molten aluminum with bell jar and skimmed after keeping the temperature 25 minutes.
Step 5, make temperature of aluminum liquid be in 730 DEG C, into molten aluminum be added iron removing reagent and keep the temperature 60 minutes, iron-content from
0.38% drops to 0.23%.As shown in table 4.
Step 6, molten aluminum bottom precipitation is filtered off, temperature of aluminum liquid is made to be in 705 DEG C, alterant is added into molten aluminum and keeps the temperature 40
Minute, last air-cooled, as shown in figure 4, left figure is metallographic microscope before testing, it can be observed that a large amount of Needle like Iron Phase, right figure is experiment
Metallographic microscope afterwards, it can be seen that under the action of alterant, Needle like Iron Phase pattern is changed, and switchs to the smaller bulk of harmfulness
Or Chinese character shape.
Table 4
Embodiment 5:
A kind of regeneration Al-Mg-Si-type aluminum alloy method for removing iron, includes the following steps:
Step 1, the aluminium block that quality is 2Kg is weighed, the refining agent of 6.6g is weighed, refining agent is cast into refining agent block, it will
Refining agent block is put into baking oven, so that oven temperature is risen to 300 DEG C and is kept the temperature 1.5 hours；NaNO in refining agent3、C2Cl6、
Na2AlF6, NaCl and graphite powder mass parts ratio be 10.5:1.7:11.3:7.8:2.
Step 2, the iron removing reagent for weighing 4.6g, iron removing reagent is put into baking oven, so that oven temperature is risen to 260 DEG C and is kept the temperature 70
Minute；Aluminium-manganese intermediate alloy and KBF4Mass parts ratio be 1.57:1.3.The content of manganese is in the aluminium-manganese intermediate alloy
10%.
Step 3, the aluminium-strontium intermediate alloy alterant for weighing 8.4g, aluminium-strontium intermediate alloy alterant is put into baking oven,
So that oven temperature is risen to 320 DEG C and keeps the temperature 40 minutes；The content of strontium is 10% in alterant aluminium-strontium intermediate alloy.
Step 4, molten aluminum is heated to 715 DEG C, refining agent is pressed into molten aluminum with bell jar and skimmed after keeping the temperature 25 minutes.
Step 5, make temperature of aluminum liquid be in 720 DEG C, into molten aluminum be added iron removing reagent and keep the temperature 55 minutes, iron-content from
0.46% drops to 0.25%.As shown in table 5.
Step 6, molten aluminum bottom precipitation is filtered off, temperature of aluminum liquid is made to be in 710 DEG C, alterant is added into molten aluminum and keeps the temperature 25
Minute, last air-cooled, as shown in figure 5, left figure is metallographic microscope before testing, it can be observed that a large amount of Needle like Iron Phase, right figure is experiment
Metallographic microscope afterwards, it can be seen that under the action of alterant, Needle like Iron Phase pattern is changed, and switchs to the smaller bulk of harmfulness
Or Chinese character shape.
Table 5
| Element | Apparent concentration | Mass percent [wt.%] | Atomic percent [at.%] |
| Al | 72.06 | 94.16 | 94.01 |
| Si | 1.21 | 1.13 | 1.08 |
| Fe | 0.72 | 0.25 | 0.12 |
| Mn | 0.32 | 0.34 | 0.16 |
| Mg | 4.40 | 4.12 | 4.63 |
| Total amount: | 78.71 | 100.00 | 100.00 |
It should be understood that this embodiment is only used to illustrate the invention but not to limit the scope of the invention.In addition, it should also be understood that,
After having read the content of the invention lectured, those skilled in the art can make various modifications or changes to the present invention, these etc.
Valence form is also fallen within the scope of the appended claims of the present application.
Claims (5)
1. a kind of regeneration Al-Mg-Si-type aluminum alloy method for removing iron, characterized in that include the following steps:
(1-1) weighs the aluminium block that quality is W, weighs the refining agent of 0.25%W~0.35%W, refining agent is cast into refining agent block,
Refining agent block is put into baking oven, oven temperature is made to rise to 200 DEG C~350 DEG C and keeps the temperature 1~2 hour；
(1-2) weighs the iron removing reagent of 1.5%W~2.5%W, and iron removing reagent is put into baking oven, and oven temperature is made to rise to 250 DEG C~300
DEG C and keep the temperature 50~80 minutes；
The iron removing reagent is by aluminium-manganese intermediate alloy and KBF4It forms, the aluminium-manganese intermediate alloy and KBF in iron removing reagent4Mass parts
Number is than being (1-1.57): (1.3-1.86)；
(1-3) weighs aluminium-strontium intermediate alloy alterant of 0.3%W~0.45%W, and aluminium-strontium intermediate alloy alterant is put into baking oven
In, so that oven temperature is risen to 250 DEG C~350 DEG C and keeps the temperature 30~60 minutes；
Molten aluminum is heated to 700 DEG C~720 DEG C by (1-4), and refining agent is pressed into molten aluminum and after keeping the temperature 20~30 minutes with bell jar
It skims；
(1-5) makes temperature of aluminum liquid be in 710 DEG C~740 DEG C, and iron removing reagent is added into molten aluminum and keeps the temperature 40~60 minutes；
(1-6) filters off molten aluminum bottom precipitation, and temperature of aluminum liquid is made to be in 700 DEG C~720 DEG C, and alterant is added into molten aluminum and keeps the temperature
It is 20~40 minutes, last air-cooled.
2. Iron Removal from Secondary Aluminum Alloy method according to claim 1, characterized in that the refining agent is by NaNO3、C2Cl6、
Na2AlF6, NaCl and graphite powder composition, the NaNO in refining agent3、C2Cl6、Na2AlF6, NaCl and graphite powder mass parts ratio
For (10.3-12): (1-1.7): (9.7-11.3): (6.7-8.4): (1.7-2.3).
3. Iron Removal from Secondary Aluminum Alloy method according to claim 1, characterized in that the aluminium-strontium intermediate alloy alterant
The content of middle strontium is 8%-11%.
4. Iron Removal from Secondary Aluminum Alloy method according to claim 1 or 2 or 3, characterized in that use ceramic foam filter net
Filter off molten aluminum bottom precipitation.
5. Iron Removal from Secondary Aluminum Alloy method according to claim 1, characterized in that manganese in the aluminium-manganese intermediate alloy
Content is 9%-11%.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710874459.8A CN107619958B (en) | 2017-09-25 | 2017-09-25 | Iron removing method for regenerated Al-Mg-Si series aluminum alloy |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710874459.8A CN107619958B (en) | 2017-09-25 | 2017-09-25 | Iron removing method for regenerated Al-Mg-Si series aluminum alloy |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN107619958A CN107619958A (en) | 2018-01-23 |
| CN107619958B true CN107619958B (en) | 2019-04-26 |
Family
ID=61090331
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201710874459.8A Active CN107619958B (en) | 2017-09-25 | 2017-09-25 | Iron removing method for regenerated Al-Mg-Si series aluminum alloy |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN107619958B (en) |
Families Citing this family (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108359810A (en) * | 2018-03-09 | 2018-08-03 | 北京科技大学 | A kind of environment-friendly type regeneration aluminium refining agent and its application method |
| CN110684901B (en) * | 2019-08-13 | 2021-06-22 | 宁波长振铜业有限公司 | Method for reducing iron content in waste brass |
| CN110616343A (en) * | 2019-09-20 | 2019-12-27 | 北京科技大学 | Method for improving open circuit potential of recycled aluminum alloy and recycled aluminum alloy with high open circuit potential |
| CN110904354B (en) * | 2019-11-12 | 2021-06-01 | 成都银河动力有限公司 | Method for preparing aluminum-silicon alloy by using high-iron-content ZL102 aluminized alloy and aluminum-silicon alloy |
| CN111411247B (en) * | 2020-03-18 | 2021-11-26 | 清远市正通金属制品有限公司 | Composite treatment method for regenerated wrought aluminum alloy melt |
| CN112853146B (en) * | 2020-12-30 | 2022-02-01 | 福建科源新材料股份有限公司 | Method for removing residual Sr in regenerated aluminum-silicon alloy |
| CN114231771B (en) * | 2021-12-17 | 2022-09-06 | 安徽百圣鑫金属科技有限公司 | High-performance aluminum alloy prepared by using recycled aluminum and preparation method |
| CN115233004B (en) * | 2022-08-02 | 2023-01-10 | 上海大学 | Al-Si alloy iron removal method based on Al-50Sn alloy |
-
2017
- 2017-09-25 CN CN201710874459.8A patent/CN107619958B/en active Active
Also Published As
| Publication number | Publication date |
|---|---|
| CN107619958A (en) | 2018-01-23 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN107619958B (en) | Iron removing method for regenerated Al-Mg-Si series aluminum alloy | |
| Basak et al. | Morphological changes and segregation of β-Al9Fe2Si2 phase: A perspective from better recyclability of cast Al-Si alloys | |
| EP2479304B1 (en) | Preparation method for aluminum-zirconium-titanium-carbon intermediate alloy | |
| Feng et al. | Influence of beryllium addition on the microstructural evolution and mechanical properties of Zr alloys | |
| Davami et al. | The effect of melt quality and filtering on the Weibull distributions of tensile properties in Al–7% Si–Mg alloy castings | |
| CN109295330A (en) | A kind of method of nitride field trash in refinement ni-base wrought superalloy | |
| Rejaeian et al. | Effects of Be additions on microstructure, hardness and tensile properties of A380 aluminum alloy | |
| Zhang et al. | Effect of Ti on microstructure and mechanical properties of die-cast Al-Mg-Zn-Si alloy | |
| Guo et al. | Microstructure characteristics and mechanical properties of rheoformed wrought aluminum alloy 2024 | |
| CN107794390B (en) | Iron removing method for regenerated Al-Si series aluminum alloy | |
| Elsayed et al. | Effect of aluminum-titanium-boron based grain refiners on AZ91E magnesium alloy grain size and microstructure | |
| Zhang et al. | Investigation on the modification behavior of A356. 2 alloy with Yb–La composite modifier | |
| CN103343270A (en) | High-strength magnesium-aluminum-manganese-strontium alloy and preparation method thereof | |
| WU et al. | Microstructure and tensile properties of Mg–Li–Al–Zn based alloys with Ce addition | |
| CN108977738B (en) | Hydrogen-containing titanium-based block amorphous alloy | |
| CN104152747B (en) | A kind of Mg-Zn-Y magnesium alloy and preparation method thereof | |
| Chen et al. | Semisolid microstructure of AM60B magnesium alloy refined by SiC particles | |
| CN111961899B (en) | Method for removing impurity iron in magnesium alloy by using Al-Zr intermediate alloy | |
| CN107619959B (en) | Iron removing method for regenerated Al-Cu-Si series aluminum alloy | |
| Zhiyong et al. | Effect of Ce-rich rare earth on microstructure and mechanical properties of Mg-10Zn-5Al-0.1 Sb magnesium alloy. | |
| CN111647762A (en) | Iron removing method for aluminum alloy | |
| AA3003 | Effect of melt treatment on the microstructure and mechanical properties of an AA3003 aluminum alloy | |
| Yu et al. | Nucleation and growth of eutectic cell in hypoeutectic Al-Si alloy | |
| CN107858572B (en) | A kind of high-toughness casting magnesium alloy and preparation method thereof | |
| Onyia et al. | Effects of sulphur addition on modification and mechanical properties of sand cast A1-2wt% Alloy |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| TR01 | Transfer of patent right |
Effective date of registration: 20200427 Address after: No. 185, oasis Avenue, Si'an Development Zone, Changxing County, Huzhou City, Zhejiang Province Patentee after: Daxia aluminum technology (Huzhou) Co.,Ltd. Address before: 310014 Department of science and technology, Zhejiang University of Technology, No. 18 Chao Wang Road, Xiacheng District, Zhejiang, Hangzhou Patentee before: ZHEJIANG UNIVERSITY OF TECHNOLOGY |
|
| TR01 | Transfer of patent right | ||
| TR01 | Transfer of patent right |
Effective date of registration: 20231026 Address after: No. 185 Lvzhou Avenue, Si'an Town, Changxing County, Huzhou City, Zhejiang Province, 313100 Patentee after: ZHEJIANG DAXIA ALUMINIUM INDUSTRY CO.,LTD. Address before: No. 185 Lvzhou Avenue, Si'an Development Zone, Changxing County, Huzhou City, Zhejiang Province, 313100 Patentee before: Daxia aluminum technology (Huzhou) Co.,Ltd. |
|
| TR01 | Transfer of patent right |